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KMID : 0358819930200030527
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Journal of Korean Society of Plastic and Reconstructive Surgeons
1993 Volume.20 No. 3 p.527 ~ p.538
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EXPERIMENTAL STUDY OF LASER ASSISTED MICROVASCULAR ANSTOMOSIS(LAMA) USING THE Nd: YAG LASER CONTACT LASER
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Abstract
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A comparative study was undertaken to evaluate the contact Neodymium : yttrium aluminum garnet(Nd : YAG) laser system for vascular anastomosis of small caliber blood vessels(diameter 0.5-1.2mm) in the animal model.
In this study 40 femoral arteries and 40 femoral veins of Sprague-Dawley rats were anastomosed by contact laser assisted microvascular anastomosis(LAMA) utilizing 3 stay sutures which were placed 120 degrees apart and the intervals welded with contact Nd : YAG laser unit, conventionally sutured anastomosis(CSA) served as controls.
The time needed for vascular anastomosis, patency rate(immediate postoperative, postoperative 2nd day, postoperative 1 week, postoperative 4 week), gross and microscopic evaluations were compared to conventional microsurgical suture technique.
The results are as follows
(I)Post-operative patency rate was 82.5% for femoral artery and 75% for femoral vein by contact LAMA technique compared to 90% and 75% by CSA technique at post operative 4 weeks.
(2)Less time-consumed for arterial anastomosis by 6 minutes 23 seconds and venous anasto mosis by 8 minutes 55 seconds with contact LAMA technique compared to CSA technique. (3)Grossly almost complete healing had taken place by post-operative 1 week by contact LAMA technique.
(4) Aneurysm formation was 5% for femoral artery and 15% for femoral vein by contact LAMA technique compared to 5 % and 10 % respectively by CSA technique.
(5)Microscopically, re-endothelization was complete by post-operative 7th day by contact LAMA technique. There was less medial hypertrophy and hyperplasia and also less inflammatory response compared to CSA.
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KEYWORD
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